Cc: Arnaldo Carvalho de Melo <a...@redhat.com>
Cc: Peter Zijlstra <a.p.zijls...@chello.nl>
Cc: Namhyung Kim <namhy...@kernel.org>
Cc: David Ahern <dsah...@gmail.com>
Cc: Jiri Olsa <jo...@redhat.com>
Link: http://lkml.kernel.org/n/tip-dsx0fn9mjwfprizboanvt...@git.kernel.org
Signed-off-by: Ingo Molnar <mi...@kernel.org>
---
tools/perf/config/Makefile | 4 ++--
tools/perf/config/feature-checks/Makefile | 4 ++++
tools/perf/config/feature-checks/test-dwarf.c | 9 +++++++++
3 files changed, 15 insertions(+), 2 deletions(-)
diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
index 8cd0fd8..89630b8 100644
--- a/tools/perf/config/Makefile
+++ b/tools/perf/config/Makefile
@@ -110,6 +110,7 @@ FEATURE_TESTS = \
bionic \
libelf \
glibc \
+ dwarf \
libnuma
$(foreach test,$(FEATURE_TESTS),$(call feature_check,$(test),$(test)))
@@ -190,8 +191,7 @@ else
LIBDW_LDFLAGS := -L$(LIBDW_DIR)/lib
endif
- FLAGS_DWARF=$(CFLAGS) $(LIBDW_CFLAGS) -ldw -lz -lelf $(LIBDW_LDFLAGS)
$(LDFLAGS) $(EXTLIBS)
- ifneq ($(call try-cc,$(SOURCE_DWARF),$(FLAGS_DWARF),libdw),y)
+ ifneq ($(feature-dwarf), 1)
msg := $(warning No libdw.h found or old libdw.h found or elfutils is
older than 0.138, disables dwarf support. Please install new
elfutils-devel/libdw-dev);
NO_DWARF := 1
endif # Dwarf support
diff --git a/tools/perf/config/feature-checks/Makefile
b/tools/perf/config/feature-checks/Makefile
index c0569c7..566a71d 100644
--- a/tools/perf/config/feature-checks/Makefile
+++ b/tools/perf/config/feature-checks/Makefile
@@ -8,6 +8,7 @@ FILES= \
test-bionic \
test-libelf \
test-glibc \
+ test-dwarf \
test-libnuma
CC := $(CC) -MD
@@ -42,6 +43,9 @@ test-libelf:
test-glibc:
$(BUILD)
+test-dwarf:
+ $(BUILD) -ldw
+
test-libnuma:
$(BUILD) -lnuma
diff --git a/tools/perf/config/feature-checks/test-dwarf.c
b/tools/perf/config/feature-checks/test-dwarf.c
new file mode 100644
index 0000000..783dfcd
--- /dev/null
+++ b/tools/perf/config/feature-checks/test-dwarf.c
@@ -0,0 +1,9 @@
+#include <dwarf.h>
+#include <elfutils/libdw.h>
+#include <elfutils/version.h>
+
+int main(void)
+{
+ Dwarf *dbg = dwarf_begin(0, DWARF_C_READ);
+ return (long)dbg;
+}
--
1.8.3.1
--
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